A footwear fatigue simulation testing machine

Abstract

The application relates to a shoe fatigue simulation testing machine and relates to the technical field of shoe fatigue simulation testing equipment, which comprises a control assembly, a first processing station, a second processing station, a pressing tool, an adjusting and detecting device, a rotating shaft driven by a motor, a gear wheel meshing transmission power transmission belt wheel set, a gear wheel driving a first rack and a second rack to move synchronously and oppositely, so that the first clamp elastically buffers and clamps a sample from a horizontal direction; meanwhile, the first clamp links the second clamp to press the sample from a vertical direction, multi-directional stable clamping is realized, a switching plate is driven by an adjusting cylinder to move transversely, power is flexibly switched, flexible adjustment of clamping driving and detecting positions is realized, a pressure sensor is matched to collect impact force values in real time and automatically adjust air pressure, so that the impact force dynamically follows the change of preset values. The application has the effects of stable clamping, precise impact force control, adjustable detecting position and strong adaptability.

Description

Technical Field

[0001] This application relates to the technical field of footwear fatigue simulation testing equipment, and in particular to a footwear fatigue simulation testing machine. Background Technology

[0002] Currently, footwear products require various fatigue performance tests during research and development and production to evaluate their durability and comfort in actual wear. Existing footwear fatigue testing equipment typically employs a single-station design, enabling only one fatigue testing mode. This lack of flexibility in switching between different testing requirements on the same equipment leads to low testing efficiency and low equipment utilization. Furthermore, existing equipment often uses single-point clamping, which can easily damage the sample surface during impact or bending, and the clamping stability is insufficient, causing sample displacement during testing and affecting the accuracy and repeatability of the results. Simultaneously, impact force control often relies on mechanical limits or open-loop control, making real-time, dynamic, and precise adjustment of the impact force difficult. This results in the actual impact force deviating from the preset value, reducing the reliability of the test results. Moreover, for reciprocating impact testing, the impact position of the sample is difficult to adjust conveniently and accurately, failing to meet the needs of multi-point fatigue testing.

[0003] Regarding the aforementioned technologies, existing footwear fatigue testing equipment suffers from problems such as limited testing modes, poor clamping stability leading to sample damage, inaccurate impact force control, and inconvenient testing position adjustment.

[0004] Therefore, there is an urgent need to develop a footwear fatigue testing machine that can achieve multi-station integrated testing, has multi-directional stable elastic clamping function, closed-loop precise control of impact force, and flexible adjustment of testing position, so as to improve testing efficiency, accuracy and equipment adaptability. Summary of the Invention

[0005] The purpose of this application is to provide a footwear fatigue simulation testing machine to solve the problems in the prior art.

[0006] The present application provides a footwear fatigue testing machine with the following technical solution: it includes a control component, a drive component is installed at the upper rear end of the control component, a controller is installed at the lower front end of the drive component, a first processing station for reciprocating impact testing of the sample is installed on the left bottom of the drive component, and a second processing station for reciprocating bending testing of the sample is installed on the right bottom of the drive component. The bottoms of the first processing station and the second processing station are both connected to the upper end of the control component. A pressure fixture is detachably installed inside the second processing station. It also includes an adjustment and detection device installed inside the first processing station.

[0007] By adopting the above technical solution, namely, through the cooperation of the control component and the drive component, the controller precisely controls the first processing station to realize the up-and-down reciprocating impact detection of the sample, and the second processing station to realize the reciprocating bending detection of the sample. The pressure fixture can be detachably installed in the second processing station, and the adjustment detection device is installed in the first processing station, thereby meeting different detection needs and improving the versatility of the equipment.

[0008] Preferably, the adjustment and detection device includes a carrier plate, a bracket locked to the outside of the carrier plate, the bottom of the bracket being slidably connected to a control component, a bottom shell being abutted to the bottom of the carrier plate, and the bottom of the bottom shell being connected to the interior of the first processing station, a switching transmission component being installed inside the bottom shell, a pulley assembly being abutted to the upper rear end of the switching transmission component, the pulley assembly being built into the bottom of the carrier plate, and the upper front end of the pulley assembly being connected to a multi-directional clamping component.

[0009] By adopting the above technical solution, the multi-directional clamping component is driven to stably clamp the sample by switching the transmission component and the pulley assembly, which facilitates the adjustment of the detection position. At the same time, the transmission component is adjusted according to the longitudinal back and forth adjustment of the sample processing station to adjust the up and down reciprocating impact detection position of the sample, thereby improving the positioning accuracy and detection efficiency of the sample during the impact detection process.

[0010] Preferably, the switching transmission assembly includes a base plate connected to the bottom of the bottom shell. A motor is provided on the left front end of the base plate, and the bottom of the motor is slidably connected to the base plate. A switching structure is connected to the output end of the motor. A rotating rod is connected to the rear side of the switching structure. A pulley assembly is longitudinally installed on the upper right end of the base plate. The rear sides of the rotating rod and the pulley assembly are both connected to a connecting seat. The bottom of the connecting seat is slidably connected to the base plate. A main bevel gear is rotatably connected to the middle of the connecting seat. The middle part of the main bevel gear is slidably connected to the rotating rod. A secondary bevel gear is meshed with the upper end of the main bevel gear. A connecting shaft is abutted to the upper middle part of the secondary bevel gear. The top of the connecting shaft is connected to the pulley assembly.

[0011] By adopting the above technical solution, namely by switching the structure to control the power transmission path, the motor drives the rotating rod to drive the main bevel gear and the secondary bevel gear to mesh, and then the connecting shaft transmits the power to the pulley group; at the same time, the switching structure switches the power, and the meshing and disengagement of the main bevel gear and the secondary bevel gear are carried out. At this time, the power will drive the pulley group to adjust the longitudinal position of the carrier plate, so as to realize the flexible adjustment of the front and rear detection position of the sample.

[0012] Preferably, the switching structure includes an adjusting cylinder, which is horizontally mounted on the front side of the base plate. The output end of the adjusting cylinder is connected to a switching plate. The upper end of the switching plate is inserted into the middle of the outer side of the docking sleeve, and the docking sleeve is locked to the outside of the rotating shaft. Support members are connected to both ends of the rotating shaft, and the left side of the rotating shaft is connected to the output end of the motor. A first bevel gear is installed on the right side of the rotating shaft near the docking sleeve. The rear side of the first bevel gear is meshed with a second bevel gear, and the middle part of the second bevel gear is connected to the rotating rod. A positioning shaft is installed on the right side of the rotating shaft, and a positioning sleeve is provided opposite to the right side of the positioning shaft. Support plates are installed on both ends of the positioning sleeve, and the bottom of both support plates is connected to the base plate. A pulley assembly is connected to the outside of the positioning sleeve.

[0013] By adopting the above technical solution, that is, by adjusting the cylinder to drive the switching plate to drive the docking sleeve and the rotating shaft to move laterally, the first bevel gear and the second bevel gear are engaged or disengaged. At the same time, the positioning shaft and the positioning sleeve cooperate to achieve stable docking, and the positioning sleeve is supported by the support plate, which facilitates the rapid switching and disconnection of power, improves the convenience of operation and the reliability of transmission, and avoids malfunctions.

[0014] Preferably, the multi-directional clamping assembly includes a gear, which is installed in the middle of the carrying plate, and the middle of the gear is connected to the front side of the pulley assembly through a shaft. A first rack and a second rack are respectively meshed on the outer two sides of the gear, and the ends of the first rack and the second rack away from the gear are connected to a first clamp. A second clamp is installed on the upper end of the first clamp.

[0015] By adopting the above technical solution, namely, the pulley set drives the gear to rotate, and the gear meshes with the first rack and the second rack to drive the first clamps on both sides to move synchronously in opposite directions or in opposite directions, and cooperates with the second clamp to achieve multi-directional clamping of the sample, ensuring that the sample is accurately positioned and does not deviate during the up-and-down reciprocating impact test, thereby improving the accuracy of the test results.

[0016] Preferably, the first clamp includes a connecting frame, which is connected to one side of the first rack and the second rack. Both ends of one side of the connecting frame are provided with dampers. The side of the damper away from the connecting frame is connected to a clamping plate. Side strips are fixedly connected to both ends of the clamping plate, and the outer ends of the side strips on both sides are inserted into the side wall of the connecting frame. First springs are installed inside both sides of the connecting frame, and one end of the first spring is connected to the insertion end of the side strip.

[0017] By adopting the above technical solution, namely, the first and second racks of the connecting frame drive synchronously in opposite directions or in opposite directions, so that the clamping plate holds the sample. With the guidance of the side strips on both sides and the combined action of the first spring and damper in the connecting frame, elastic buffering is achieved, which reduces the damage to the sample surface during impact testing and improves the safety and adaptability of clamping.

[0018] Preferably, the second clamp includes a stabilizing frame, which is fixed to the upper end of the connecting frame. A pressure arm is rotatably mounted inside the upper end of the stabilizing frame. A top rod is inserted inside one side of the pressure arm. A roller is rotatably connected to the bottom of the top rod. The roller abuts against the upper end of the transmission block. The transmission block is mounted on the upper end of the clamping plate, and a transmission groove is opened at the upper end of the transmission block. The inside of the transmission groove is connected to the outside of the roller. A guide plate is connected to the outside of the top rod, and the upper end of the guide plate is locked to the stabilizing frame. A pressure plate is connected to the end of the pressure arm away from the top rod. Limiting blocks are fixed on both sides of the pressure plate, and the limiting blocks are slidably embedded inside the inside of both sides of the stabilizing frame. A guide rod is connected to the middle of the limiting block. The guide rod is vertically installed inside the left and right sides of the guide rod, and a second spring is provided on the outside of both sides of the guide rod.

[0019] By adopting the above technical solution, the transmission block at the upper end of the clamping plate pushes the roller at the bottom of the top rod to move along the transmission groove, the top rod rises and drives the pressure arm to rotate around the stabilizing frame, so that the pressure plate presses down; at the same time, the limiting block slides along the guide rod, and the second spring provides elastic restoring force, thereby realizing the upward elastic clamping of the sample and improving the stability of the sample clamping impact test.

[0020] Preferably, the rotating rod is integrally provided with longitudinal key shafts on both the upper and lower sides, and the rotating rod is longitudinally limited and slidably connected to the middle of the main bevel gear through the shafts provided on the upper and lower sides.

[0021] By adopting the above technical solution, torque can be transmitted while allowing the main bevel gear to slide relative to each other along the axial direction, thereby maintaining the continuity of power transmission when switching structural actions and improving the flexibility and reliability of the transmission system.

[0022] Preferably, the rotating shaft is laterally movably inserted between the two supporting members, and the adjustment distance of the rotating shaft is adapted to the meshing and disengagement of the first bevel gear and the second bevel gear.

[0023] By adopting the above technical solution, the lateral sliding distance of the rotating shaft can enable the first bevel gear and the second bevel gear to mesh precisely or completely separate, avoiding gear interference and ensuring the accuracy of power switching.

[0024] Preferably, the positioning shaft is arranged in a rectangular shaft shape, and a groove with the same shape is opened on the right side of the positioning shaft relative to the middle of the positioning sleeve.

[0025] By adopting the above technical solution, circumferential positioning and axial insertion are achieved, relative rotation is prevented, the stability and centering of power transmission are improved, and rapid docking and separation are facilitated.

[0026] Preferably, the middle part of the pressure arm is rotatably connected to the upper end of the stabilizing frame via a shaft, and the pressure arm is longitudinally provided with grooves at the docking positions with the top rod and the pressure plate.

[0027] By adopting the above technical solution, namely, the pressure arm, the top rod, and the pressure plate form a linkage transmission structure, the stable realization of the subsequent downward clamping action is guaranteed.

[0028] In summary, this application includes at least one of the following beneficial technical effects: 1. This application achieves integrated dual-station testing by setting up a control component, a drive component, a controller, a first processing station, and a second processing station: the first processing station is used for reciprocating impact testing of the sample, and the second processing station is used for reciprocating bending testing of the sample. Both stations can be precisely controlled by the controller. With the detachable installation of the pressure fixture, it can meet the various fatigue testing needs of different footwear samples and improve the versatility and testing efficiency of the equipment.

[0029] 2. This application simulates fatigue impact testing by setting up an impact load cylinder in the first processing station, i.e., using the closed-loop pressure control principle: the drive motor drives the eccentric turntable to rotate, and the push-pull arm drives the stamping part and the impact load cylinder to move up and down reciprocally, applying an impact force to the sample. The pressure sensor collects the impact force value for each time in real time and feeds it back to the human-machine interface. After comparing it with the preset value, the air inlet or release valve of the air tank is automatically adjusted so that the impact force value for each time dynamically converges near the preset value, realizing closed-loop adaptive control of the impact force, thereby improving the accuracy and stability of fatigue impact testing.

[0030] 3. This application sets up an adjustment detection device, that is, by switching the transmission component and the pulley group to drive the multi-directional clamping component to stably clamp the sample, which facilitates the adjustment of the detection position; at the same time, the switching transmission component is adjusted according to the longitudinal front and back of the sample processing station to adjust the up and down reciprocating impact detection position of the sample, thereby improving the positioning accuracy and detection efficiency of the sample during the impact detection process.

[0031] 4. This application sets up a switching transmission component, that is, controls the power transmission path through a switching structure: the motor drives the rotating rod to drive the main bevel gear and the secondary bevel gear to mesh, and the power is transmitted to the pulley group through the connecting shaft to realize clamping drive; when the switching structure separates the main bevel gear and the secondary bevel gear, the power is switched to the pulley group, which drives the connecting seat and the carrying plate to move longitudinally, thereby realizing flexible switching between clamping drive and detection position adjustment, and meeting the needs of multi-point stamping fatigue detection.

[0032] 5. This application sets up a multi-directional clamping assembly, that is, the pulley group drives the gear to rotate, and the gear meshes with the first rack and the second rack to drive the first clamps on both sides to move synchronously towards or away from each other, so as to achieve stable clamping of the sample in the horizontal direction; at the same time, the second clamp installed on the upper end of the first clamp presses down on the sample from the vertical direction, forming a multi-directional synchronous clamping structure, ensuring that the sample is accurately positioned and does not deviate during the up-and-down reciprocating impact test, which significantly improves the accuracy and repeatability of the test results.

[0033] 6. This application sets up a first clamp, namely the connecting frame, which moves synchronously with the first rack and the second rack in opposite directions, so that the clamping plate holds the sample; with the guiding effect of the side strips on both sides and the combined action of the first spring and the damper in the connecting frame, elastic buffer clamping is achieved, which effectively reduces rigid damage to the sample surface during impact testing while ensuring clamping stability, and improves the safety and adaptability of clamping.

[0034] 7. This application provides a second clamp, in which, when the clamping plates move towards each other, the transmission block at the upper end of the clamp pushes the roller and the push rod upward through the transmission groove. The push rod drives the pressure arm to rotate around the stabilizing frame, causing the pressure plate to press the sample down vertically. At the same time, the limiting block slides along the guide rod, and the second spring provides elastic restoring force, thereby achieving elastic clamping of the upper surface of the sample. Together with the first clamp, it forms a multi-directional stable clamping, further improving the stability and anti-displacement ability of the sample during the impact testing process. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a frontal view of the overall internal structure of the driver component in this application; Figure 3 This is a schematic diagram of the overall internal structure of the control component in this application; Figure 4 This is a schematic diagram of the three-dimensional integral structure of the press fixture in this application; Figure 5 This is a three-dimensional structural diagram of the adjustment and detection device of this application; Figure 6 This is a schematic diagram of the disassembled structure of the adjustment and detection device in this application; Figure 7 This is a three-dimensional structural diagram of the switching transmission component of this application; Figure 8 This application Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a three-dimensional schematic diagram of the switching structure of this application; Figure 10 This is a three-dimensional structural diagram of the multi-directional clamping component of this application; Figure 11 This is a three-dimensional structural diagram of the first fixture in this application; Figure 12 This is a three-dimensional structural diagram of the second fixture in this application; Figure 13 This is a three-dimensional structural diagram of the second clamping part of this application; Figure 14 This is the impact force-time curve collected in this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Control component; 11. Housing; 12. Cylinder support; 13. Lifting cylinder; 2. Drive component; 21. Protective housing; 22. Cooling fan; 23. Drive motor; 24. Eccentric turntable; 25. Adjusting screw; 26. Push-pull arm; 3. Controller; 4. First processing station; 41. Guide column; 42. Stamped part; 43. Impact load cylinder; 44. Support plate; 45. Pressure sensor; 5. Second processing station; 6. Press. 61. Connecting plate; 62. Pin; 63. Connecting plate; 64. Adjusting plate; 65. Frame; 66. Arc plate; 67. Lock button; 68. Scale; 69. Scale block; 7. Adjustment and detection device; 71. Carrying plate; 72. Bracket; 73. Bottom shell; 74. Switching and transmission assembly; 741. Base plate; 742. Motor; 743. Switching structure; 7431. Adjusting cylinder; 7432. Switching plate; 7433. Connecting sleeve; 7434. Rotating shaft 7435, Support component; 7436, First bevel gear; 7437, Second bevel gear; 7438, Positioning shaft; 7439, Positioning sleeve; 74310, Support plate; 744, Rotating rod; 745, Pulley assembly; 746, Connecting seat; 747, Main bevel gear; 748, Secondary bevel gear; 749, Connecting shaft; 75, Pulley assembly; 76, Multi-directional clamping assembly; 761, Gear; 762, First rack; 763, Second rack; 764 7641. First clamp; 7642. Connecting frame; 7643. Damper; 7644. Clamping plate; 7645. Side strip; 7646. First spring; 765. Second clamp; 7651. Stabilizing frame; 7652. Pressure arm; 7653. Top rod; 7654. Roller; 7655. Transmission block; 7656. Transmission groove; 7657. Guide plate; 7658. Pressure plate; 7659. Limiting block; 76510. Guide rod; 76511. Second spring. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 - Appendix Figure 14 This application will be described in further detail below.

[0038] Example 1: A footwear fatigue testing machine, referring to Figures 1-3 The system includes a control component 1, a drive component 2 mounted on the upper rear end of the control component 1, a controller 3 mounted on the lower front end of the drive component 2, a first processing station 4 for reciprocating impact detection of the sample mounted on the left bottom of the drive component 2, and a second processing station 5 for reciprocating bending detection of the sample mounted on the right bottom of the drive component 2. The bottoms of both the first processing station 4 and the second processing station 5 are connected to the upper end of the control component 1. A pressure fixture 6 is detachably mounted inside the second processing station 5. The system also includes an adjustment and detection device 7 installed inside the first processing station 4. The control component 1 includes a housing 11, a cylinder support 12, and a lifting cylinder 13. The housing 11 is located at the bottom. Cylinder supports 12 are installed on both the left and right sides inside the housing 11, and lifting cylinders 13 are locked on the top of the cylinder supports 12 on both sides. The top of the lifting cylinders 13 is connected to the first processing station 4 and the second processing station 5 respectively, so as to lift the samples detected by the first processing station 4 and the second processing station 5 respectively. The drive assembly 2 includes a protective box 21, a cooling fan 22, a drive motor 23, an eccentric turntable 24, an adjusting screw 25, and a push-pull arm 26. The protective box 21 is connected to the upper rear end of the housing 11, and the front end of the protective box 21 is equipped with an opening and closing door via a hinge. A cooling fan 22 for heat dissipation is installed on the rear side inside the protective box 21. Drive motors 23 are locked to the left and right sides of the protective box 21 via a frame, and the front output ends of both drive motors 23 are connected to the eccentric turntable 24. The eccentric turntable 24 can rotate eccentrically with the drive motor 23. An adjusting screw 25 is installed in the middle of the 24, and a block is threadedly connected to the outside of the adjusting screw 25. The adjusting screw 25 is rotatably connected to the upper end of the push-pull arm 26 through the connecting block. That is, in conjunction with the threaded transmission between the adjusting screw 25 and the block, the push-pull arm 26 can be flexibly adjusted in terms of the up-and-down pushing distance as it rotates eccentrically. The bottom of the push-pull arm 26 is rotatably connected to the first processing station 4 or the second processing station 5. That is, through the intermittent eccentric transmission between the eccentric turntable 24 and the push-pull arm 26, the samples installed on the first processing station 4 and the second processing station 5 can achieve stable stamping and testing activities. The first processing station 4 includes guide pillars 41, stamping parts 42, impact load cylinders 43, receiving plates 44, and pressure sensors 45. The guide pillars 41 are installed in pairs on the upper end of the housing 11. The stamping parts 42 are slidably connected to the upper outer end of the guide pillars 41, and the middle part of the upper end of the stamping parts 42 is rotatably connected to the bottom of the push-pull arm 26, that is, it moves with the push-pull arm 26 to realize the up-and-down reciprocating stamping activity. The impact load cylinder 43 is detachably installed on the lower end of the stamping parts 42, and the impact load cylinder 43 is connected to an external air tank. The receiving plate 44 is installed on the outer side of the lower end of the guide pillars 41, and the pressure sensor 45 is installed in the middle part of the upper end of the receiving plate 44. The pressure sensor 45 is connected to the external human-machine interface, and the upper end of the pressure sensor 45 is connected to the bottom of the adjustment and detection device 7.

[0039] In the above embodiment, the first processing station 4 uses the closed-loop pressure control principle to conduct simulated fatigue impact tests on footwear samples, combined with... Figures 1-4The drive motor 23 drives the eccentric turntable 24 to rotate, which in turn drives the stamping part 42 and the impact load cylinder 43 to reciprocate up and down via the push-pull arm 26. At the same time, the lifting cylinder 13 inside the housing 11 operates, causing the receiving plate 44 and the impact platform mounted on it—that is, the carrier plate 71 of the adjusting detection device 7—to move up and down, thereby adjusting the initial position of the impact test. When the impact load cylinder 43 moves downward, it applies an impact force to the footwear sample placed on the adjusting detection device 7, causing it to impact the pressure sensor 4 on the receiving plate 44. 5. Upon contact, an impact force is generated. Pressure sensor 45 senses and collects the impact force value for each impact and outputs it to the human-machine system. The magnitude of each impact force value is compared with a preset value: if the impact force value is too large, the pressure relief valve of the air tank connected to the impact load cylinder 43 is opened to release and reduce the air pressure; if the impact force value is too small, the air inlet valve of the air tank is opened to increase the air pressure. Through the above dynamic adjustment, the impact force value is dynamically adjusted within the preset value range, thereby achieving accurate and stable detection of the compression performance of samples such as bouncy shoes. The collected impact force-time curve is shown in the figure below. Figure 14 As shown: Stage a is the stage when the bouncing shoe sample just begins to contact the impact platform. At this time, the bouncing shoe sample itself begins to compress, and the force value begins to increase continuously until it is compressed to the set force value f. At this time, the compressive force of the bouncing shoe sample is just equal to the output force of the impact load cylinder. In stage b, the bouncy shoe sample itself is no longer compressed. The compression force of the bouncy shoe sample is equal to the output force of the impact load cylinder 43. As the eccentric turntable 24 drives the impact load cylinder 43 to continue to move downward, the impact load cylinder 43 begins to retract. At this time, the impact force value no longer increases, but is offset by the retraction of the impact load. In stage c, the eccentric turntable 24 drives the impact load cylinder 43 to continue moving upward. At this time, the impact force value gradually decreases from the set force value f until it becomes zero. In stage d, the jumping shoe sample and the clamp detach from the impact platform, at which point the force value is zero. After stage d, the next impact cycle will begin. It should be noted that, Figure 14 The impact force-time curve shown reflects the change in impact force experienced by the bouncing shoe sample within a complete impact cycle. The non-constant characteristic of this curve is determined by the mechanical interaction between the impact load cylinder and the sample, and is not the control target of the pressure control system. The control target is the peak force value reached in each impact cycle, and the peak force value is kept consistent with the preset value through closed-loop feedback.

[0040] Reference Figures 5-6The adjustment and detection device 7 includes a carrier plate 71, and an externally locked bracket 72 for supporting the forward and backward movement of the carrier plate 71, so as to avoid uneven pressure on one side when the sample carried by the carrier plate 71 is adjusted forward and backward. The bottom of the bracket 72 is slidably connected to the upper end of the box 11. The bottom of the carrier plate 71 is connected to the bottom shell 73, and the bottom of the bottom shell 73 is connected to the pressure sensor 45 inside the first processing station 4. The bottom shell 73 is equipped with a switching transmission component 74 for clamping drive and forward and backward stamping position adjustment. The upper end of the switching transmission component 74 is connected to the pulley group 75. The pulley group 75 is built into the bottom of the carrier plate 71, and the upper front end of the pulley group 75 is connected to the multi-directional clamping component 76.

[0041] Specifically, by switching the transmission component 74 to work in conjunction with the pulley assembly 75, the multi-directional clamping component 76 is driven to stably clamp the sample, making it easy to adjust the detection position. At the same time, the transmission component 74 is adjusted longitudinally and backward according to the sample processing station to adjust the up-and-down reciprocating impact detection position of the sample, thereby improving the positioning accuracy and detection efficiency of the sample during the impact detection process.

[0042] Reference Figures 7-8 The switching transmission component 74 includes a base plate 741, which is connected to the bottom of the bottom shell 73. A motor 742 is located on the left front end of the base plate 741. The bottom of the motor 742 is laterally slidably connected to the base plate 741, and the output end of the motor 742 is connected to a switching structure 743. A rotating rod 744 is longitudinally connected to the rear side of the switching structure 743. A pulley set 745 for longitudinal adjustment is longitudinally installed on the upper right end of the base plate 741. The rotating rod 744 and the pulley set 745 are connected to each other. 5. The rear side is connected to the connecting seat 746, and the bottom of the connecting seat 746 is longitudinally limited and slidably connected to the base plate 741 to ensure stability during the forward and backward movement and adjustment process. The main bevel gear 747 is rotatably connected to the middle of the connecting seat 746, and the middle of the main bevel gear 747 is limited and slidably connected to the rotating rod 744. The upper end of the main bevel gear 747 is meshed with the secondary bevel gear 748, and the upper middle of the secondary bevel gear 748 is connected to the connecting shaft 749, and the top of the connecting shaft 749 is connected to the pulley group 75.

[0043] Specifically, the power transmission path is controlled by the switching structure 743. The motor 742 drives the rotating rod 744 to engage the main bevel gear 747 and the secondary bevel gear 748, and then the power is transmitted to the pulley group 75 by the connecting shaft 749. At the same time, the switching structure 743 switches the power to engage and disengage the main bevel gear 747 and the secondary bevel gear 748. At this time, the power will drive the pulley group 745 to adjust the longitudinal position of the carrier plate 71, so as to realize the flexible adjustment of the front and rear detection position of the sample.

[0044] The rotating rod 744 has longitudinal key shafts integrally provided on both the upper and lower sides, and the rotating rod 744 is longitudinally limited and slidably connected to the main bevel gear 747 through the shafts provided on the upper and lower sides.

[0045] Specifically, it can both transmit torque and allow the main bevel gear 747 to slide relative to it along the axial direction, thereby maintaining the continuity of power transmission when the switching structure 743 is in operation, and improving the flexibility and reliability of the transmission system.

[0046] Reference Figure 9 The switching structure 743 includes an adjusting cylinder 7431, which is horizontally mounted on the front side of the base plate 741. The output end of the adjusting cylinder 7431 is connected to an inverted L-shaped switching plate 7432. The upper end of the switching plate 7432 is inserted into the middle of the outer side of the docking sleeve 7433, and the docking sleeve 7433 is locked to the outside of the rotating shaft 7434. That is, when the switching plate 7432 moves horizontally with the adjusting cylinder 7431, it simultaneously satisfies the horizontal pushing and pulling of the docking sleeve 7433 and the rotating shaft 7434, thereby flexibly realizing power switching. Support members 7435 are connected to both ends of the rotating shaft 7434, and the left side of the rotating shaft 7434 is connected to... The output end of the motor 742 is connected to the shaft 7434, and a first bevel gear 7436 is installed near the right side of the mating sleeve 7433. The rear side of the first bevel gear 7436 meshes with the second bevel gear 7437, and the middle part of the second bevel gear 7437 is connected to the rotating rod 744. A positioning shaft 7438 is installed on the right side of the shaft 7434, and a positioning sleeve 7439 is provided opposite to the right side of the positioning shaft 7438. Support plates 74310 for supporting the fit are installed at both ends of the positioning sleeve 7439, and the bottom of both support plates 74310 is connected to the base plate 741. A pulley set 745 is connected to the outside of the positioning sleeve 7439.

[0047] Specifically, by adjusting the cylinder 7431 to drive the switching plate 7432, the docking sleeve 7433 and the rotating shaft 7434 move laterally, so that the first bevel gear 7436 and the second bevel gear 7437 mesh or separate. At the same time, the positioning shaft 7438 and the positioning sleeve 7439 cooperate to achieve stable docking, and the positioning sleeve 7439 is supported by the support plate 74310. This facilitates the rapid switching and disconnection of power, improves the convenience of operation and the reliability of transmission, and avoids malfunctions.

[0048] The rotating shaft 7434 is laterally movably inserted between the two side support members 7435, and the adjustable distance of the rotating shaft 7434 is adapted to the meshing and disengagement of the first bevel gear 7436 and the second bevel gear 7437.

[0049] Specifically, the lateral sliding distance of the rotating shaft 7434 enables the first bevel gear 7436 to precisely mesh with or completely disengage from the second bevel gear 7437, avoiding gear interference and ensuring the accuracy of power switching.

[0050] The positioning shaft 7438 is generally rectangular in shape, and a groove with the same shape is opened on the right side of the positioning shaft 7438 relative to the middle of the positioning sleeve 7439.

[0051] Specifically, this means achieving circumferential positioning and axial insertion, preventing relative rotation, improving the stability and alignment of power transmission, and facilitating rapid docking and separation.

[0052] Reference Figure 10 The multi-directional clamping assembly 76 includes a gear 761, which is installed in the middle of the carrier plate 71. The middle of the gear 761 is connected to the front side of the pulley assembly 75 through a shaft. A first rack 762 and a second rack 763 are respectively meshed on the outer sides of the gear 761. The ends of the first rack 762 and the second rack 763 away from the gear 761 are connected to the first clamp 764. The first rack 762 and the second rack 763 are arranged in opposite longitudinal directions along the outside of the gear 761, thereby realizing flexible synchronous movement in opposite directions. A second clamp 765 is installed on the upper end of the first clamp 764.

[0053] Specifically, the pulley assembly 75 drives the gear 761 to rotate. The gear 761 meshes with the first rack 762 and the second rack 763 to drive the first clamps 764 on both sides to move synchronously towards or away from each other. Together with the second clamp 765, the sample is clamped in multiple directions, ensuring that the sample is accurately positioned and does not deviate during the up-and-down reciprocating impact test, thereby improving the accuracy of the test results.

[0054] Reference Figure 11 The first clamp 764 includes a connecting frame 7641, which is connected to one side of the first rack 762 and the second rack 763. Both ends of one side of the connecting frame 7641 are provided with dampers 7642. The side of the damper 7642 away from the connecting frame 7641 is connected to a clamping plate 7643. The clamping plate 7643 is used to clamp the sample from front to back. Both ends of the clamping surface of the clamping plate 7643 are curved arc surfaces. Side strips 7644 are fixedly connected to both the left and right ends of the clamping plate 7643. The outer ends of the side strips 7644 are inserted into the side wall of the connecting frame 7641 and slide along the left and right side walls of the connecting frame 7641. A first spring 7645 is installed inside both sides of the connecting frame 7641, and one end of the first spring 7645 is connected to the insertion end of the side strip 7644.

[0055] Specifically, the first rack 762 and the second rack 763 of the connecting frame 7641 drive synchronously in opposite directions or in opposite directions, so that the clamping plate 7643 clamps the sample. With the guidance of the side strips 7644 on both sides and the combined action of the first spring 7645 and the damper 7642 in the connecting frame 7641, elastic buffer clamping is achieved, which reduces the damage to the sample surface during impact testing and improves the safety and adaptability of clamping.

[0056] Reference Figures 12-13The second clamp 765 includes a stabilizing frame 7651, which is an inverted L-shaped frame fixed to the upper end of the connecting frame 7641. A pressure arm 7652 is rotatably mounted inside the upper end of the stabilizing frame 7651. A push rod 7653 is inserted into one side of the pressure arm 7652, and the upper end of the push rod 7653 is connected to the inside of the pressure arm 7652 via a shaft. A roller 7654 is rotatably connected to the bottom of the push rod 7653. The roller 7654 abuts against the upper end of the transmission block 7655, and the top of the transmission block 7655 is inclined. The transmission block 7655 is mounted on the upper end of the clamping plate 7643, and a transmission groove 7656 is formed on the upper end of the transmission block 7655. The inside of the transmission groove 7656 is connected to the outside of the roller 7654, i.e., the roller 7654 is guided by the inclined direction of the transmission groove 7656, thus achieving the connection between the roller 7654 and the push rod 7653. The lifting transmission has a guide plate 7657 externally connected to the lifting rod 7653, and the upper end of the guide plate 7657 is locked to the stabilizing frame 7651, which ensures that the lifting rod 7653 is in a stable up-and-down movement state under the transmission. The end of the pressure arm 7652 away from the lifting rod 7653 is connected to a pressure plate 7658, and there is a gap between the lower end of the pressure plate 7658 and the clamping surface of the clamping plate 7643. Limit blocks 7659 are fixed on both sides of the pressure plate 7658, and the limit blocks 7659 on both sides are slidably embedded in the interior of the left and right sides of the stabilizing frame 7651 to provide vertical movement guidance support. The middle of the limit blocks 7659 on both sides is vertically connected to a guide rod 76510, and the guide rods 76510 on both sides are vertically installed inside the left and right sides of the guide rod 76510. A second spring 76511 is provided on the exterior of the guide rods 76510 on both sides.

[0057] Specifically, the transmission block 7655 at the upper end of the clamping plate 7643 pushes the roller 7654 at the bottom of the push rod 7653 to move along the transmission groove 7656. The push rod 7653 rises and drives the pressure arm 7652 to rotate around the stabilizing frame 7651, causing the pressure plate 7658 to press down. At the same time, the limiting block 7659 slides along the guide rod 76510, and the second spring 76511 provides elastic restoring force, thereby realizing the elastic pressing of the sample and improving the stability of the sample clamping impact test.

[0058] The middle part of the pressure arm 7652 is rotatably connected to the upper end of the stabilizing frame 7651 via a shaft, and the pressure arm 7652 is longitudinally grooved at the docking positions with the top rod 7653 and the pressure plate 7658.

[0059] Specifically, the pressure arm 7652, the push rod 7653, and the pressure plate 7658 form a linkage transmission structure, thus ensuring the stable realization of subsequent downward clamping actions.

[0060] Example 2: The first processing station 4 and the second processing station 5 have the same structure. The difference lies in the component installed at the lower end of the stamping part 42. The component installed at the first processing station 4 is the impact load cylinder 43, while the component installed at the second processing station 5 is the press 6. Reference Figure 4 The press 6 includes a connecting plate 61, a pin 62, a mating plate 63, an adjusting plate 64, a clamping frame 65, an arc-shaped plate 66, a locking button 67, a scale 68, and a scale block 69. The connecting plate 61 has a pin 62 at the middle of its upper end, which is inserted into the second processing station 5 and locked with bolts. The bottom of the connecting plate 61 is locked with the mating plate 63. The rear side of the mating plate 63 is rotatably connected to the adjusting plate 64. The front side of the lower end of the adjusting plate 64 is locked with a clamping frame 65 for holding the heel of the shoe sample. Arc-shaped plates 66 are welded to both sides of the mating plate 63, and a locking button 67 is screwed into the inside of each arc-shaped plate 66. A scale 68 for indicating the adjustment distance is locked to the outside of the arc-shaped plate 66. Scale blocks 69 are installed on both sides of the adjusting plate 64, with the marking end of the scale block 69 facing the outer scale of the scale 68.

[0061] The working principle of this application is as follows: During the reciprocating impact test, the footwear sample is placed longitudinally and flat on the carrier plate 71 of the adjustment and testing device 7 in the first processing station 4. The motor 742 is started, driving the rotating shaft 7434 to rotate. At this time, the first bevel gear 7436 and the second bevel gear 7437 are in a meshing state. The power is transmitted sequentially through the rotating rod 744, the main bevel gear 747, the secondary bevel gear 748, and the connecting shaft 749 to the pulley group 75. The pulley group 75 drives the gear 761 to rotate. The gear 761 drives the first rack 762 and the second rack 763 to move synchronously towards each other, so that the connecting frame 7641 in the first clamps 764 on both sides respectively engages with the first rack 762 and the second rack 763. The movement of 3 is a longitudinal, opposite movement. When the connecting frame 7641 drives the clamping plate 7643 to abut against the front and rear ends of the sample, as the connecting frame 7641 continues to move, the side strips 7644 connected on the left and right sides of the clamping plate 7643 will slide and guide along the side wall of the connecting frame 7641, and realize the compression of the first spring 7645 set inside the two sides of the connecting frame 7641 and the compression of the damper 7642 set between the connecting frame 7641 and the clamping plate 7643. Thus, a continuous elastic preload is provided during the clamping process, and through the synergistic effect of the damper 7642, the sample is elastically buffered and clamped, which not only ensures the clamping stability, but also avoids damage to the sample surface caused by rigid impact. Meanwhile, as the connecting frame 7641 continues to move, the top rod 7653, which is connected to the guide plate 7657 at the bottom of the stabilizing frame 7651, will push the roller 7654 and the top rod 7653 upward through the transmission groove 7656 on the outside of the transmission block 7655. Thus, when the top rod 7653 pushes upward, it drives the pressure arm 7652 to rotate around the inside of the stabilizing frame 7651, so that the pressure plate 7658 presses down on the sample from the vertical direction, thereby realizing multi-directional stable clamping of the sample during the impact test. At the same time, during the downward pressure of the pressure plate 7658, the movement guidance of the limit blocks 7659 on both sides, the guide rod 76510 and the second spring 76511 and the rebound assistance ensure the stable release of the subsequent downward pressure state. Secondly, after the footwear sample is clamped at the front and back sides and the front and back top, the drive motor 23 is started. The drive motor 23 drives the eccentric turntable 24 to rotate. The eccentric turntable 24 drives the stamping part 42 and the impact load cylinder 43 to move up and down along the guide post 41 through the push-pull arm 26. At the same time, the lifting cylinder 13 in the control component 1 runs, driving the receiving plate 44 and the adjustment and detection device 7 installed on it to move up and down to adjust the initial position of the impact test. When the impact load cylinder 43 moves downward, it applies an impact force to the sample. The sample contacts the pressure sensor 45 on the receiving plate 44 to generate an impact force value. The pressure sensor 45 collects the impact force value in real time and outputs it to the human-machine interface. The human-machine interface compares the force value with the preset target force value: if the impact force value is too large, it controls the pressure release valve of the air tank connected to the impact load cylinder 43 to open and release the reduced air pressure; if the impact force value is too small, it controls the air inlet valve of the air tank to open and increase the air pressure. Through the above closed-loop dynamic adjustment, it is ensured that the impact force value is consistent with the preset value each time, thereby achieving a high-precision and high-stability simulated fatigue impact test; When impact testing is required at different longitudinal positions of the sample, the adjusting cylinder 7431 drives the switching plate 7432 to move the docking sleeve 7433 and the rotating shaft 7434 to the right laterally, so that the first bevel gear 7436 and the second bevel gear 7437 are separated. At this time, the positioning shaft 7438 set at the right end of the rotating shaft 7434 will insert the positioning into the middle of the positioning sleeve 7439, realizing the power switch to the pulley group 745. As a result, the pulley group 745 drives the connecting seat 746 and the carrier plate 71 to move longitudinally, thereby changing the impact testing position of the sample, realizing multi-point impact fatigue testing of the forefoot, arch, and heel areas of footwear samples, improving the comprehensiveness and adaptability of the test. When reciprocating bending test is required, the sample is vertically mounted on the impact platform of the second processing station 5. During installation, the heel of the shoe sample is clamped by the clip 65 inside the pressure fixture 6. The angle of the adjustment plate 64 is adjusted according to the cooperation of the scale 68 and the scale block 69, and then locked and fixed by the locking button 67. At this time, the shoe sample will stand vertically on the impact platform of the second processing station 5. When the drive component 2 is started, the second processing station 5 will realize the reciprocating bending fatigue test of the shoe sample through the intermittent eccentric transmission of the eccentric turntable 24 and the push-pull arm 26. Thus, dual-station processing and testing can be carried out to meet the needs of different testing modes. Finally, the entire detection process is coordinated and controlled by the controller 3, and the impact force value collected by the pressure sensor 45 is fed back to the human-machine interface in real time, forming a closed-loop control system.

[0062] This application provides a footwear fatigue testing machine, comprising a control component 1, a first processing station 4, a second processing station 5, a clamping fixture 6, and an adjustment and detection device 7. A motor 742 drives a rotating shaft 7434 to rotate, transmitting power to a pulley assembly 75 via a meshing first bevel gear 7436 and a second bevel gear 7437. The pulley assembly 75 drives a gear 761 to rotate, which in turn drives a first rack 762 and a second rack 763 to move synchronously in opposite directions. This causes the first clamp 764 to elastically and bufferly hold the sample horizontally. Simultaneously, the first clamp 764, in conjunction with the second clamp 765, presses the sample downwards vertically, achieving stable clamping from multiple directions. An adjusting cylinder 7431 drives a switching plate 7432 to move laterally, allowing for flexible power switching and adjustment of the clamping drive and detection position. Furthermore, a pressure sensor 45 collects the impact force value in real time and automatically adjusts the air pressure, ensuring the impact force dynamically follows a preset value. This application offers stable clamping, precise impact force control, adjustable detection position, and strong adaptability.

[0063] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A footwear fatigue testing machine, comprising a control component (1), a drive component (2) installed at the upper rear end of the control component (1), a controller (3) installed at the lower front end of the drive component (2), a first processing station (4) for reciprocating impact testing of a sample installed on the left side of the bottom of the drive component (2), and a second processing station (5) for reciprocating bending testing of a sample installed on the right side of the bottom of the drive component (2). The bottoms of the first processing station (4) and the second processing station (5) are both connected to the upper end of the control component (1), and a pressure fixture (6) is detachably installed inside the second processing station (5). Its features are: It also includes an adjustment and detection device (7) installed inside the first processing station (4). The adjustment and detection device (7) includes a carrier plate (71), a bracket (72) is locked to the outside of the carrier plate (71), the bottom of the bracket (72) is slidably connected to the control component (1), the bottom of the carrier plate (71) is connected to the bottom shell (73), and the bottom of the bottom shell (73) is connected to the inside of the first processing station (4). A switching transmission component (74) is installed inside the bottom shell (73), and a pulley group (75) is connected to the upper rear end of the switching transmission component (74). The pulley group (75) is built into the bottom of the carrier plate (71), and the upper front end of the pulley group (75) is connected to the multi-directional clamping component (76). The switching transmission assembly (74) includes a base plate (741) connected to the bottom of the bottom shell (73). A motor (742) is provided on the left front end of the base plate (741). The bottom of the motor (742) is slidably connected to the base plate (741), and a switching structure (743) is connected to the output end of the motor (742). A rotating rod (744) is connected to the rear side of the switching structure (743). A pulley assembly (745) is longitudinally installed on the upper right end of the base plate (741). The rotating rod (744) is connected to the belt. The rear side of the wheel set (745) is connected to the connecting seat (746), and the bottom of the connecting seat (746) is slidably connected to the base plate (741). The main bevel gear (747) is rotatably connected to the middle of the connecting seat (746), and the middle of the main bevel gear (747) is slidably connected to the rotating rod (744). The upper end of the main bevel gear (747) is meshed with the secondary bevel gear (748). The upper middle of the secondary bevel gear (748) is connected to the connecting shaft (749), and the top of the connecting shaft (749) is connected to the pulley set (75).

2. The footwear fatigue testing machine according to claim 1, characterized in that: The switching structure (743) includes an adjusting cylinder (7431), which is horizontally mounted on the front side of the base plate (741). The output end of the adjusting cylinder (7431) is connected to a switching plate (7432). The upper end of the switching plate (7432) is inserted into the middle of the outer side of the docking sleeve (7433), and the docking sleeve (7433) is locked to the outside of the rotating shaft (7434). Both ends of the rotating shaft (7434) are connected to support members (7435), and the left side of the rotating shaft (7434) is connected to the output end of the motor (742). The rotating shaft (7434) is located near the right side of the docking sleeve (7433). A first bevel gear (7436) is installed, and the rear side of the first bevel gear (7436) meshes with a second bevel gear (7437). The middle part of the second bevel gear (7437) is connected to a rotating rod (744). A positioning shaft (7438) is installed on the right side of the rotating shaft (7434), and a positioning sleeve (7439) is provided opposite to the right side of the positioning shaft (7438). Support plates (74310) are installed on both the left and right ends of the positioning sleeve (7439), and the bottom of the support plates (74310) on both sides are connected to the base plate (741). A pulley group (745) is connected to the outside of the positioning sleeve (7439).

3. The footwear fatigue testing machine according to claim 1, characterized in that: The multi-directional clamping assembly (76) includes a gear (761), which is installed in the middle of the carrier plate (71). The middle of the gear (761) is connected to the front side of the pulley assembly (75) through a shaft. The outer sides of the gear (761) are respectively meshed with a first rack (762) and a second rack (763). The ends of the first rack (762) and the second rack (763) away from the gear (761) are connected to a first clamp (764). A second clamp (765) is installed on the upper end of the first clamp (764).

4. The footwear fatigue testing machine according to claim 3, characterized in that: The first clamp (764) includes a connecting frame (7641), which is connected to one side of the first rack (762) and the second rack (763). Both ends of one side of the connecting frame (7641) are provided with dampers (7642). The side of the damper (7642) away from the connecting frame (7641) is connected to a clamping plate (7643). Both ends of the clamping plate (7643) are fixedly connected with side strips (7644), and the outer ends of the side strips (7644) on both sides are inserted into the side wall of the connecting frame (7641). A first spring (7645) is installed inside both sides of the connecting frame (7641), and one end of the first spring (7645) is connected to the insertion end of the side strip (7644).

5. The footwear fatigue testing machine according to claim 4, characterized in that: The second clamp (765) includes a stabilizing frame (7651), which is fixed to the upper end of the connecting frame (7641). A pressure arm (7652) is rotatably mounted inside the upper end of the stabilizing frame (7651). A push rod (7653) is inserted inside one side of the pressure arm (7652). A roller (7654) is rotatably connected to the bottom of the push rod (7653). The roller (7654) abuts against the upper end of the transmission block (7655). The transmission block (7655) is mounted on the upper end of the clamping plate (7643), and a transmission groove (7656) is opened at the upper end of the transmission block (7655). The inside of the transmission groove (7656) is connected to the outside of the roller (7654). Connected to the top rod (7653), a guide plate (7657) is connected to the outside of the top rod (7653), and the upper end of the guide plate (7657) is locked to the stabilizing frame (7651). The end of the pressure arm (7652) away from the top rod (7653) is connected to a pressure plate (7658). Limiting blocks (7659) are fixed on both sides of the pressure plate (7658), and the limiting blocks (7659) are slidably embedded in the inside of both sides of the stabilizing frame (7651). A guide rod (76510) is connected to the middle of the limiting block (7659). The guide rod (76510) is vertically installed inside the left and right sides of the guide rod (76510), and a second spring (76511) is provided on the outside of both sides of the guide rod (76510).

6. The footwear fatigue testing machine according to claim 1, characterized in that: The rotating rod (744) is integrally provided with longitudinal key shafts on both the upper and lower sides, and the rotating rod (744) is longitudinally limited and slidably connected to the main bevel gear (747) through the shafts provided on the upper and lower sides.

7. The footwear fatigue simulation testing machine according to claim 2, characterized in that: The rotating shaft (7434) is laterally movably inserted between the two support members (7435), and the adjustable distance of the rotating shaft (7434) is adapted to the meshing and disengagement of the first bevel gear (7436) and the second bevel gear (7437).

8. The footwear fatigue simulation testing machine according to claim 2, characterized in that: The positioning shaft (7438) is generally rectangular in shape, and a groove with the same shape is opened on the right side of the positioning shaft (7438) in the middle of the positioning sleeve (7439).

9. The footwear fatigue testing machine according to claim 5, characterized in that: The middle part of the pressure arm (7652) is rotatably connected to the upper end of the stabilizing frame (7651) via a shaft, and the pressure arm (7652) and the top rod (7653) and the pressure plate (7658) are all longitudinally provided with grooves at their docking positions.

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